Visual inspection equipment for precision metal part processing

Abstract

The invention relates to the technical field of precision metal machining, and particularly discloses visual inspection equipment for precision metal part machining. The driving assembly can drive the rotating cylinder to sequentially rotate by 180 degrees in a reciprocating mode, the precise metal parts falling into the containing groove from the discharging hopper can rotate along with the rotating cylinder, at the moment, the rotating detection mechanism can conduct visual detection on the surfaces of the rotating precise metal parts, when defects are detected, the precise metal parts are discharged through the classification discharging mechanism, and when no defects are detected, the precise metal parts are discharged through the classification discharging mechanism. The rotary detection mechanism drives the precision metal part to rotate reversely, at the moment, the coating mechanism automatically coats the outer surface of the precision metal part with a coating, in the process that the precision metal part rotates to the classified discharging mechanism from the discharging port again, the rotary detection mechanism conducts visual detection on the coating, and the defective coating and the defect-free coating are discharged in a classified mode through the classified discharging mechanism. In the whole process, full-automatic detection on the outer surface of the precise metal part and simultaneous treatment and detection on a subsequent coating are efficiently achieved, and efficient integrated treatment is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of precision metal processing, and in particular to a visual inspection equipment for precision metal parts processing. Background Art

[0002] Precision metal parts are widely used in high-precision fields such as aerospace, automobile manufacturing, electronic equipment, and medical equipment. These metal parts usually need to withstand harsh working environments and have extremely high requirements for their dimensional accuracy, surface quality, and functionality. Therefore, it is very important to ensure the processing quality of precision metal parts, especially during the production process, which must be strictly inspected to ensure that there are no defects beyond the design tolerance range.

[0003] In the production process of precision metal parts, visual inspection technology is often used to inspect their surface quality and size. This process usually includes: when the workpiece passes through the inspection area, the surface is scanned using a high-resolution camera and a precision light source, and image data is collected and compared with the preset standards for analysis. The inspection system can determine whether the workpiece meets the design requirements and output the corresponding inspection results.

[0004] In traditional inspection methods, workpieces usually need to go through one or more independent steps, and be transported and processed by manual or mechanical systems. Although these steps can complete the required inspection, due to the lack of high integration and real-time feedback between the operation steps, the overall inspection process is relatively scattered, making it difficult to achieve continuous and efficient processing. There may be a certain pause or waiting between the inspection links of each workpiece, resulting in the overall inspection process being not smooth enough, affecting production efficiency.

[0005] In actual operation, there is no effective linkage between the detection and subsequent processing, resulting in delays in the sorting of qualified and unqualified workpieces and subsequent processing. This leads to failure to achieve precise synchronization when dealing with complex processes or multiple functional requirements, lengthy operation steps, and low production efficiency. Summary of the invention

[0006] In order to improve the efficiency of visual inspection and subsequent processing of precision metal parts, the present application provides a visual inspection equipment for precision metal parts processing.

[0007] The visual inspection equipment for precision metal parts processing provided in this application adopts the following technical solutions: Visual inspection equipment for precision metal parts processing, used for inspecting and processing hollow cylindrical precision metal parts, including a processing table, on which are arranged, from top to bottom, a feeding hopper for feeding precision metal parts one by one, a rotating inspection mechanism for performing rotating visual inspection on the precision metal parts after feeding, and a classification feeding mechanism for classifying and feeding qualified and unqualified precision metal parts after inspection; The rotation detection mechanism includes a fixed cylinder, a rotating cylinder, a driving assembly and a visual detection assembly. The fixed cylinder is installed on the processing table, the lower hopper is fixed to the top of the fixed cylinder, and the bottom of the lower hopper is provided with a lowering port connected to the inner cavity of the fixed cylinder. The rotating cylinder is coaxially rotatably installed in the fixed cylinder, and a receiving groove for partially accommodating the precision metal parts is provided on the outer peripheral wall. A rotating clamping mechanism for clamping and rotating the precision metal parts falling into the receiving groove is provided on the outer wall of the rotating cylinder corresponding to the receiving groove; The driving assembly is used to drive the rotating drum to rotate 180 degrees back and forth successively, so that the receiving tank can be rotated from the material discharge port to the classification material discharge mechanism. When the receiving tank rotates from the material discharge port to the classification material discharge mechanism, the rotating clamping mechanism is used to drive the precision metal parts to rotate one circle; The rotating drum is provided with a coating mechanism for coating a protective layer on the outer surface of qualified precision metal parts detected by the visual inspection component. The coating mechanism automatically coats the surface of the precision metal parts when the rotating drum rotates in reverse after being inspected by the visual inspection component.

[0008] By adopting the above technical solution, the driving assembly can drive the rotating drum to rotate 180 degrees back and forth. During the rotation process, the precision metal parts dropped from the discharge hopper into the receiving tank can rotate with the rotating drum. During this process, the rotating detection mechanism will visually inspect the surface of the precision metal parts under the rotation of the rotating clamping mechanism. When defects are detected, the rotating detection mechanism will drive the precision metal parts to be discharged by the classification discharge mechanism. When no defects are detected, the rotating detection mechanism will drive the precision metal parts to rotate in the opposite direction. At this time, the coating mechanism will automatically apply the coating to the outer surface of the precision metal parts. When it rotates from the discharge port to the classification discharge mechanism again, the rotating detection mechanism will visually inspect the coating, and the defective and non-defective coatings will be classified and discharged by the classification discharge mechanism. The whole process can efficiently realize the fully automatic detection of the outer surface of the precision metal parts and the joint processing and detection of the subsequent coatings, realize efficient integrated processing, and greatly improve the efficiency of visual inspection and subsequent processing of precision metal parts.

[0009] Optionally, the visual detection component includes two groups of image recognition arrays arranged on the inner wall of the fixed cylinder, the two groups of image recognition arrays are respectively located near the discharge port and near the classification discharge mechanism, and each group of image recognition arrays includes two rows of arrays composed of multiple image recognition sensors, and the two groups of image recognition arrays can respectively perform image recognition on the surface of the rotating precision metal parts; A position sensor for detecting the position of precision metal parts after being identified by the two groups of image recognition arrays is arranged in the fixed cylinder, and the position sensor is located between the image recognition sensor array close to the classification and unloading mechanism and the classification and unloading mechanism.

[0010] By adopting the above technical solution, when the driving assembly drives the rotating cylinder to rotate, the receiving groove on the rotating cylinder will drive the precision metal parts to rotate together. At this time, the first group of image recognition sensors respectively perform visual inspection on the outer surface of the precision metal parts on the side away from the receiving groove. After the first group of image recognition sensors complete the inspection, the rotating cylinder continues to drive the precision metal parts to rotate, and the rotating clamping mechanism rotates the side of the precision metal parts close to the receiving groove to the side away from the receiving groove. At this time, the second group of image recognition sensors performs visual inspection on the surface of the precision metal parts after rotation, thereby realizing all-round coverage inspection of the surface of the precision metal parts.

[0011] Optionally, the rotating clamping mechanism includes a telescopic part, a rotating part and a clamping plate, and the telescopic part, rotating part and clamping plate are symmetrically arranged in two groups corresponding to the two ends of the accommodating groove, and the telescopic part is fixed on the inner wall of the accommodating groove, the fixed end of the rotating part is fixed on the telescopic end of the telescopic part, and the clamping plate is fixed on the rotating end of the rotating part. The two clamping plates can clamp and fix the precision metal parts that fall into the accommodating groove.

[0012] By adopting the above technical solution, when the rotating cylinder drives the precision metal part to rotate along with the rotating cylinder, the telescopic part is pre-extended, so that the two clamping plates clamp and fix the end of the precision metal part. At this time, the rotating part rotates, thereby driving the precision metal part to rotate from the side close to the accommodating groove to the side away from the accommodating groove, thereby facilitating visual detection by the second group of image recognition sensors.

[0013] Optionally, the coating mechanism includes a liquid storage cylinder, a liquid outlet bin, a positioning cylinder and a reciprocating pump liquid assembly, the liquid storage cylinder is fixedly connected to the rotating cylinder and is located inside the rotating cylinder, the inner wall of the liquid storage cylinder is hollow and is equipped with a liquid coating for coating a qualified precision metal surface; One end of the liquid outlet bin is fixed to the outer bottom wall of the containing tank and communicates with the inner wall, the positioning cylinder is fixedly connected to the rotating cylinder and is located in the liquid storage cylinder, and the other end of the liquid outlet bin passes through the positioning cylinder and is fixedly connected to the positioning cylinder; The liquid storage cylinder and the liquid outlet bin are connected to each other, a first one-way valve is arranged in the liquid storage cylinder to allow the liquid coating to enter the liquid outlet bin from the liquid storage cylinder in one direction, and a second one-way valve is arranged in the liquid outlet bin near the outer wall of the containing tank to allow the liquid coating to enter the containing tank from the liquid outlet bin in one direction; The liquid outlet bin is disposed through an opening at one end of the positioning cylinder, and the reciprocating end portion of the reciprocating pump liquid assembly extends into the liquid outlet bin, and is used to automatically pump the liquid coating in the liquid storage cylinder into the containing tank; The reciprocating pump assembly is provided with a one-way locking assembly for controlling the start of the reciprocating pump assembly. When the driving assembly drives the rotating drum to rotate from the discharge port to the classification discharge mechanism, the reciprocating pump assembly stops working. When the driving assembly drives the rotating drum to rotate from the classification discharge mechanism to the discharge port, the one-way locking assembly controls the reciprocating pump assembly to work. A plurality of heating elements for heating and curing the surface of the precision metal part after being coated with the protective layer are arranged between the two groups of image recognition sensors.

[0014] By adopting the above technical solution, when the driving component drives the rotating cylinder to rotate, it will also drive the liquid outlet bin and the positioning cylinder to rotate together. When rotating from the discharge port toward the classification discharge mechanism, the driving component will not drive the reciprocating pump liquid component to work. After the two groups of image recognition sensors have completed visual inspection of the surface of the precision metal parts and there are no defects on the surface of the precision metal parts, the driving component drives the rotating cylinder to rotate in the opposite direction. When rotating from the classification discharge mechanism to the discharge port, the driving component drives the reciprocating pump liquid component to work, thereby coating the surface of the precision metal parts with a protective layer, and the protective layer is then heated and cured under the action of the heating element.

[0015] After coating all positions on the surface of precision metal parts, two sets of image recognition sensors perform visual inspection of the applied coating again and classify and unload the precision metal parts based on whether there are any coating defects.

[0016] Optionally, the reciprocating pump liquid assembly includes a rotating shaft, a driving gear, a driven gear, a connecting rod and a piston. The rotating shaft is coaxially fixed on the axis of the rotating cylinder and is transmission-connected to the driving assembly. The driving gear is coaxially fixed on the rotating shaft. The driven gear is rotatably installed in the rotating cylinder and meshes with the driving gear. One end of the connecting rod is eccentrically connected to the end face of the driving gear, and the other end is connected to the end face of the piston. The piston sliding seal is arranged in the liquid outlet bin.

[0017] By adopting the above technical solution, when the driving assembly drives the rotating shaft to rotate, the active gear drives the driven gear to rotate, and the driven gear drives the piston to reciprocate through the connecting rod, so that the liquid coating in the liquid storage cylinder is sprayed through the liquid outlet tank to the outer surface of the precision metal part in contact with the top of the containing tank, thereby achieving coating of the surface of the precision metal part and cooperating with the heating element to achieve protection of the outer surface.

[0018] Optionally, the one-way locking assembly includes a rotating disk, a locking member and an elastic member, the rotating disk is coaxially connected to the driven gear, and the driven gear is rotatably mounted outside the rotating disk, the end of the connecting rod is eccentrically rotatably connected to the rotating disk, and a one-way locking tooth is circumferentially arranged on the inner wall of the driven gear; A mounting groove is provided on the wheel surface of the turntable, one end of the locking member is rotatably mounted on the inner wall of the mounting groove, and the other end is connected to the elastic member and can extend into the one-way locking tooth of the driven gear under the action of the elastic member; When the driving assembly drives the rotating drum to rotate from the discharge port toward the classification discharge mechanism, the locking piece is rotationally connected with the one-way tooth; when the driving assembly drives the rotating drum to rotate from the classification discharge mechanism toward the discharge port, the locking piece is clamped and fixed with the one-way tooth.

[0019] By adopting the above technical solution, when the rotating cylinder rotates from the discharge port to the classification discharge mechanism, the locking member is rotationally connected with the one-way latch gear, and the master and slave gears can only drive the one-way latch gear to rotate, but cannot drive the driven gear to rotate, so the piston will not reciprocate, and the protective layer will not be sprayed on the surface of the precision metal parts; When the rotating drum is rotated toward the lower feeding port by the classification unloading mechanism, the locking piece is fixedly connected with the one-way clamping tooth. At this time, the master-slave gear drives the driven gear to rotate, and the piston makes a reciprocating motion, thereby spraying a protective layer on the surface of the precision metal parts to achieve surface protection of the precision metal parts.

[0020] Optionally, two receiving grooves are provided on the outer wall of the rotating drum, and when one of the receiving grooves rotates to a position passing through the image recognition sensor at the classification unloading mechanism, the other receiving groove rotates to a position directly facing the unloading port; The position sensor, the reciprocating pump fluid assembly and the one-way locking assembly are all arranged correspondingly, and the locking and unlocking states of the two one-way locking assemblies are opposite.

[0021] By adopting the above technical solution, two corresponding groups are set up to achieve staggered cutting, staggered visual inspection and staggered application of protective layers for two precision metal parts, thereby greatly improving the efficiency of visual inspection and subsequent processing.

[0022] Optionally, the classification unloading mechanism includes a unloading sorting bin, a sorting conveyor belt and a sorting collection channel. The unloading sorting bin is used to sort qualified and unqualified precision metal parts in the two containing tanks after visual inspection, the sorting conveyor belt is used to classify and convey qualified and unqualified precision metal parts, and the sorting collection channel is used to classify and collect qualified and unqualified precision metal parts conveyed by the sorting conveyor belt.

[0023] By adopting the above technical scheme, the unloading and sorting bin can sort the qualified and unqualified precision metal parts in the two receiving slots after visual inspection, the sorting conveyor belt can classify and transport the qualified and unqualified precision metal parts, and the sorting and collecting channel can classify and collect the qualified and unqualified precision metal parts transported by the sorting conveyor belt.

[0024] Optionally, the material unloading and sorting bin includes a material unloading bin and a classification bin, the material unloading bin is open at the top, two classification bins are provided, the two classification bins are hollow and have openings at both ends, one end of the two classification bins is connected to the material unloading bin, and the other end corresponds to the sorting conveyor belt; A sorting plate and a rotating part for driving the sorting plate to rotate toward the two lower material bins are rotatably installed in the lower material bin. When the rotating part rotates, precision metal parts that fall into the lower material bin from the top of the lower material bin can pass through the sorting plate and fall into the corresponding classification bin.

[0025] By adopting the above technical solution, when the containing groove rotates to be opposite to the top of the unloading bin, the telescopic part contracts and the precision metal parts are unloaded into the unloading bin. Driven by the rotating part, the sorting plate unloads the precision metal parts into the corresponding classification bin, and the sorting conveyor belt sorts and processes the qualified and unqualified precision metal parts.

[0026] Optionally, two sorting conveyor belts are provided corresponding to the two material discharge bins, and the conveying directions of the two sorting conveyor belts are opposite. The sorting and collecting channel includes a material discharge channel and a collecting frame which is folded and arranged at the bottom of the material discharge channel.

[0027] By adopting the above technical solution, precision metal parts coming out of different classification bins will be transported to different unloading channels by different sorting conveyor belts, and then fall into corresponding collection frames from corresponding unloading channels, thereby realizing the classified collection of qualified and unqualified precision metal parts.

[0028] In summary, the present application includes at least one of the following beneficial technical effects: 1. The driving assembly can drive the rotating drum to rotate 180 degrees back and forth. During the rotation process, the precision metal parts dropped from the discharge hopper into the containing tank can rotate with the rotating drum. During this process, the rotating detection mechanism will visually inspect the surface of the precision metal parts under the rotation of the rotating clamping mechanism. When defects are detected, the rotating detection mechanism will drive the precision metal parts to be discharged by the classification discharge mechanism. When no defects are detected, the rotating detection mechanism will drive the precision metal parts to rotate in the opposite direction. At this time, the coating mechanism will automatically apply the coating to the outer surface of the precision metal parts. When it rotates from the discharge port to the classification discharge mechanism again, the rotating detection mechanism will visually inspect the coating, and the defective and non-defective coatings will be classified and discharged by the classification discharge mechanism; 2. The entire solution can efficiently realize fully automatic inspection of the outer surface of precision metal parts and the joint processing and inspection of subsequent coatings, achieving efficient integrated processing, thereby greatly improving the efficiency of visual inspection and subsequent processing of precision metal parts; 3. Two receiving tanks, two sets of position sensors, two sets of reciprocating pump components and two sets of one-way locking components can realize staggered feeding, staggered visual inspection and staggered coating of protective layers of two precision metal parts, thereby greatly improving the efficiency of visual inspection and subsequent processing; 4. The unloading and sorting bin can sort the qualified and unqualified precision metal parts in the two receiving slots after visual inspection, the sorting conveyor belt can classify and transport the qualified and unqualified precision metal parts, and the sorting and collecting channel can classify and collect the qualified and unqualified precision metal parts transported by the sorting conveyor belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the visual inspection device in the embodiment of the present application; Figure 2 yes Figure 1 Schematic diagram of the internal structure of the visual inspection equipment; Figure 3 yes Figure 1 A schematic diagram of the side view of the middle rotating cylinder; Figure 4 yes Figure 2 A schematic diagram of the structure at the middle rotating cylinder; Figure 5 yes Figure 4 A schematic diagram of the structure of the reciprocating pump fluid assembly; Figure 6 yes Figure 3 A partial structural diagram of the scraping mechanism; Figure 7 yes Figure 6 Structural diagram of the middle slide seat; Figure 8 yes Figure 5 Structural diagram of the one-way locking assembly in the middle.

[0030] Figure numerals: 1, processing table; 11, unloading hopper; 2, rotating detection mechanism; 21, fixed cylinder; 211, position sensor; 212, heating element; 22, rotating cylinder; 221, receiving tank; 2211, drainage tank; 2212, sponge strip; 23, driving component; 24, visual detection component; 3, classification unloading mechanism; 31, unloading and sorting bin; 311, unloading bin; 312, sorting bin; 32, sorting conveyor belt; 33, sorting and collecting channel; 331, unloading channel; 332, collecting frame; 4, rotating clamping mechanism; 41, telescopic member; 4 2. Rotating member; 43. Clamping plate; 5. Coating mechanism; 51. Liquid storage cylinder; 52. Liquid outlet chamber; 53. Positioning cylinder; 54. Reciprocating pump liquid assembly; 541. Rotating shaft; 542. Driving gear; 543. Driven gear; 5431. One-way latch; 544. Connecting rod; 545. Piston; 6. One-way locking assembly; 61. Turntable; 62. Locking member; 63. Elastic member; 7. Scraping mechanism; 71. Linking gear; 72. Gear column; 73. Sliding seat; 731. Threaded groove; 732. Pore flow channel; 74. Threaded rod; 75. Bristles 75. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-8 , further details of this application are given.

[0032] The embodiment of the present application discloses a visual inspection equipment for precision metal parts processing.

[0033] A visual inspection equipment for precision metal parts processing, refer to Figure 1 and Figure 2 , used for inspecting and processing hollow cylindrical precision metal parts, including a processing table 1, on which are arranged, from top to bottom, a feeding hopper 11 for feeding the precision metal parts one by one, a rotating inspection mechanism 2 for performing rotating visual inspection on the precision metal parts after feeding, and a classification feeding mechanism 3 for classifying and feeding qualified and unqualified precision metal parts after inspection.

[0034] Reference Figure 1 and Figure 2 The rotating detection mechanism 2 includes a fixed cylinder 21, a rotating cylinder 22, a driving assembly 23 and a visual detection assembly 24. The fixed cylinder 21 is installed on the processing table 1. The lower hopper 11 is fixed to the top of the fixed cylinder 21, and the bottom of the lower hopper 11 is provided with a discharge port connected to the inner cavity of the fixed cylinder 21. The rotating cylinder 22 is coaxially installed in the fixed cylinder 21, and a receiving groove 221 for partially accommodating precision metal parts is provided on the outer peripheral wall. A rotating clamping mechanism 4 for clamping and rotating the precision metal parts falling into the receiving groove 221 is provided on the outer wall of the rotating cylinder 22 corresponding to the receiving groove 221.

[0035] The driving component 23 adopts a reduction motor, and the output shaft of the reduction motor is coaxially fixed with the rotating cylinder 22. The driving component 23 is used to drive the rotating cylinder 22 to rotate back and forth 180 degrees in succession, so that the receiving groove 221 can be rotated from the unloading port to the classification unloading mechanism 3. When the receiving groove 221 rotates from the unloading port to the classification unloading mechanism 3, the rotating clamping mechanism 4 is used to drive the precision metal parts to rotate one circle.

[0036] The rotating drum 22 is provided with a coating mechanism 5 for coating the outer surface of the qualified precision metal parts detected by the visual inspection component 24 with a protective layer. The coating mechanism 5 automatically coats the surface of the precision metal parts when the rotating drum 22 rotates in reverse after being inspected by the visual inspection component 24 .

[0037] Reference Figure 2 The visual inspection component 24 includes two groups of image recognition arrays arranged on the inner wall of the fixed cylinder 21. The two groups of image recognition arrays are respectively located near the unloading port and near the classification unloading mechanism 3, and each group of image recognition arrays includes two rows of arrays composed of multiple image recognition sensors. The two groups of image recognition arrays can perform image recognition on the surface of rotating precision metal parts respectively.

[0038] Reference Figure 2 A position sensor 211 for detecting the position of precision metal parts after being identified by two groups of image recognition arrays is arranged in the fixed cylinder 21 . The position sensor 211 is located between the image recognition sensor array close to the classification and unloading mechanism 3 and the classification and unloading mechanism 3 .

[0039] When the driving component 23 drives the rotating cylinder 22 to rotate, the receiving groove 221 on the rotating cylinder 22 will drive the precision metal parts to rotate together. At this time, the first group of image recognition sensors respectively perform visual inspection on the outer surface of the precision metal parts on the side away from the receiving groove 221. After the first group of image recognition sensors have completed the inspection, the rotating cylinder 22 continues to drive the precision metal parts to rotate, and the rotating clamping mechanism 4 rotates the side of the precision metal parts close to the receiving groove 221 to the side away from the receiving groove 221. At this time, the second group of image recognition sensors perform visual inspection on the surface of the precision metal parts after rotation, thereby realizing all-round coverage inspection of the surface of the precision metal parts.

[0040] Reference Figure 2 and Figure 3The rotating clamping mechanism 4 includes a telescopic member 41, a rotating member 42 and a clamping plate 43. The telescopic member 41, the rotating member 42 and the clamping plate 43 are symmetrically arranged in two groups corresponding to the two ends of the accommodating groove 221, and the telescopic member 41 is fixed on the inner wall of the accommodating groove 221. The rotating member 42 is configured as a reduction motor. The fixed end of the rotating member 42 is fixed on the telescopic end of the telescopic member 41, and the clamping plate 43 is fixed on the rotating end of the rotating member 42. The two clamping plates 43 can clamp and fix the precision metal parts that fall into the accommodating groove 221.

[0041] When the rotating cylinder 22 drives the precision metal parts to rotate along with the rotating cylinder 22, the telescopic part 41 is pre-extended so that the two clamping plates 43 clamp and fix the ends of the precision metal parts. At this time, the rotating part 42 rotates, thereby driving the precision metal parts to rotate from the side close to the receiving groove 221 to the side away from the receiving groove 221, thereby facilitating visual detection by the second group of image recognition sensors.

[0042] Reference Figure 2 and Figure 4 The coating mechanism 5 includes a liquid storage cylinder 51, a liquid outlet bin 52, a positioning cylinder 53 and a reciprocating pump liquid assembly 54. The liquid storage cylinder 51 is fixedly connected to the rotating cylinder 22 and is located inside the rotating cylinder 22. The inner wall of the liquid storage cylinder 51 is hollow and is equipped with a liquid coating for coating qualified precision metal surfaces.

[0043] A drainage groove 2211 is provided on the inner wall of the receiving groove 221, and the length of the drainage groove 2211 is consistent with the length of the precision metal part. One end of the liquid outlet bin 52 is fixed to the outer bottom wall of the receiving groove 221 and communicates with the inner wall through the drainage groove 2211. The positioning cylinder 53 is fixedly connected to the rotating cylinder 22 and is located in the liquid storage cylinder 51. The other end of the liquid outlet bin 52 penetrates the positioning cylinder 53 and is fixedly connected to the positioning cylinder 53. The parts where the liquid storage cylinder 51 is connected to the liquid outlet bin 52 are interconnected. A first one-way valve is provided in the liquid storage cylinder 51 to allow the liquid coating to enter the liquid outlet bin 52 in a one-way direction from the liquid storage cylinder 51. A second one-way valve is provided in the liquid outlet bin 52 near the outer wall of the containing tank 221 to allow the liquid coating to enter the containing tank 221 in a one-way direction from the liquid outlet bin 52.

[0044] The liquid outlet bin 52 is disposed through an opening at one end of the positioning cylinder 53 , and the reciprocating end portion of the reciprocating pump liquid assembly 54 extends into the liquid outlet bin 52 , so as to automatically pump the liquid coating in the liquid storage cylinder 51 into the containing tank 221 .

[0045] Reference Figure 4 and Figure 5A one-way locking assembly 6 for controlling the start of the reciprocating pump fluid assembly 54 is provided at the reciprocating pump fluid assembly 54. When the driving assembly 23 drives the rotating drum 22 to rotate from the discharge port toward the classification discharge mechanism 3, the reciprocating pump fluid assembly 54 stops working. When the driving assembly 23 drives the rotating drum 22 to rotate from the classification discharge mechanism 3 toward the discharge port, the one-way locking assembly 6 controls the reciprocating pump fluid assembly 54 to work.

[0046] A plurality of heating elements 212 for heating and curing the surface of the precision metal parts coated with the protective layer are arranged between the two groups of image recognition sensors. The heating elements 212 are electric heating wires.

[0047] When the driving component 23 drives the rotating cylinder 22 to rotate, it will also drive the liquid outlet bin 52 and the positioning cylinder 53 to rotate together. When rotating from the discharge port toward the classification discharge mechanism 3, the driving component 23 will not drive the reciprocating pump liquid component 54 to work. After the two groups of image recognition sensors have completed visual inspection of the surface of the precision metal parts and there are no defects on the surface of the precision metal parts, the driving component 23 drives the rotating cylinder 22 to rotate in the opposite direction. When rotating from the classification discharge mechanism 3 toward the discharge port, the driving component 23 drives the reciprocating pump liquid component 54 to work, thereby coating the surface of the precision metal parts with a protective layer, and the protective layer is then heated and cured under the action of the heating element 212.

[0048] After coating all positions on the surface of precision metal parts, two sets of image recognition sensors perform visual inspection of the applied coating again and classify and unload the precision metal parts based on whether there are any coating defects.

[0049] Reference Figure 4 and Figure 5 The reciprocating pump liquid assembly 54 includes a rotating shaft 541, a driving gear 542, a driven gear 543, a connecting rod 544 and a piston 545. The rotating shaft 541 is coaxially fixed on the axis of the rotating cylinder 22 and is transmission-connected to the driving assembly 23. The driving gear 542 is coaxially fixed on the rotating shaft 541. The driven gear 543 is rotatably installed in the rotating cylinder 22 and meshes with the driving gear 542. One end of the connecting rod 544 is eccentrically connected to the end face of the driving gear 542, and the other end is connected to the end face of the piston 545. The piston 545 is slidingly sealed and arranged in the liquid outlet bin 52.

[0050] When the driving assembly 23 drives the rotating shaft 541 to rotate, the driving gear 542 drives the driven gear 543 to rotate, and the driven gear 543 drives the piston 545 to reciprocate through the connecting rod 544, so that the liquid coating in the liquid storage cylinder 51 is sprayed through the liquid outlet tank 52 to the outer surface of the precision metal part in contact with the top of the containing tank 221, thereby coating the surface of the precision metal part and cooperating with the heating element 212 to realize protection of the outer surface.

[0051] In order to apply the liquid coating more evenly to the outer wall of the precision metal parts, refer to Figure 6 and Figure 7 Sponge strips 2212 are installed on the two side walls of the drainage groove 2211 along the length direction. The sponge strips 2212 have particularly fine pore channels inside. The liquid coating sprayed out of the liquid outlet bin 52 will enter the sponge strips 2212 on both sides. Two groups of scraping mechanisms 7 are arranged on the inner wall of the rotating cylinder 22 corresponding to the receiving groove 221. The two groups of scraping mechanisms 7 are symmetrically arranged about the drainage groove 2211, and the arrangement methods are opposite. The scraping mechanisms 7 can follow the rotation of the rotating part 42 to transfer the liquid coating in the sponge strips 2212 and evenly apply it to the surrounding wall of the precision metal part.

[0052] Reference Figure 6 and Figure 7 The scraping mechanism 7 includes a linkage gear 71, a gear column 72, a slide 73, a threaded rod 74 and bristles 75. The linkage gear 71 is coaxially fixed on the output end of the rotating member 42. The gear column 72 is rotatably installed in the inner wall of the rotating cylinder 22 corresponding to the accommodating groove 221. The linkage gear 71 is slidably engaged with the gear column 72. The slide 73 is slidably engaged in the drainage groove 2211 and can slide along the length direction of the drainage groove 2211. The threaded rod 74 is coaxially fixed to the end of the gear column 72. A through threaded groove 731 is provided on the slide 73 corresponding to the threaded rod 74. The threaded rod 74 is threadably rotatably installed in the threaded groove 731. The bristles 75 are fixedly installed on the side of the slide 73 away from the drainage groove 2211.

[0053] Reference Figure 6 and Figure 7 The threads of the two threaded rods 74 of the two scraping mechanisms 7 are arranged in opposite directions, or the ends of the two threaded rods 74 that are close to each other are integrally connected. In this embodiment, the ends of the two threaded rods 74 are integrally connected, so that the two slides 73 can approach each other or move away from each other along the drainage groove 2211. During the sliding process of the two slides 73, the two side walls will slide and fit with the corresponding sponge strips 2212. A plurality of porous flow channels 732 are arranged in the two slides 73 at intervals. One end of the porous flow channel 732 passes through the surface that slides and fits with the sponge strip 2212, and the other end extends to the plane where the bristles 75 are located, so that the two slides 73 can transfer the liquid coating in the sponge strip 2212 to the bristles 75 through the porous flow channel 732 during the movement, and the bristles 75 are used to more evenly apply the surface of the precision metal parts, so that the application quality of the liquid coating is better.

[0054] Reference Figure 5 and Figure 8The one-way locking assembly 6 includes a turntable 61, a locking member 62 and an elastic member 63. The turntable 61 is coaxially connected to the driven gear 543, and the driven gear 543 is rotatably installed outside the turntable 61. The end of the connecting rod 544 is eccentrically connected to the turntable 61, and a one-way locking tooth 5431 is circumferentially arranged on the inner wall of the driven gear 543.

[0055] An installation groove is provided on the wheel surface of the turntable 61, one end of the locking member 62 is rotatably installed on the inner wall of the installation groove, and the other end is connected to the elastic member 63, and can extend into the one-way locking tooth 5431 of the driven gear 543 under the action of the elastic member 63. The elastic member 63 is a spring, and the locking member 62 is a locking block, and the end portion can be unidirectionally engaged and fixed with the one-way locking tooth 5431.

[0056] When the driving assembly 23 drives the rotating drum 22 to rotate from the discharge port toward the classification discharge mechanism 3, the locking member 62 is rotationally connected with the one-way latch 5431; when the driving assembly 23 drives the rotating drum 22 to rotate from the classification discharge mechanism 3 toward the discharge port, the locking member 62 is clamped and fixed with the one-way latch 5431.

[0057] There are two receiving grooves 221 on the outer wall of the rotating cylinder 22. When one of the receiving grooves 221 rotates to the position passing the image recognition sensor of the classification and unloading mechanism 3, the other receiving groove 221 rotates to the position facing the unloading port.

[0058] The position sensor 211, the reciprocating pump fluid assembly 54 and the one-way locking assembly 6 are all arranged correspondingly, and the locking and unlocking states of the two one-way locking assemblies 6 are opposite.

[0059] When the rotating cylinder 22 rotates from the material discharge port to the classification material discharge mechanism 3, the locking member 62 is rotationally connected with the one-way latching tooth 5431. At this time, the master-slave gear can only drive the one-way latching tooth 5431 to rotate, but cannot drive the driven gear 543 to rotate. Therefore, the piston 545 does not reciprocate, and the protective layer will not be sprayed on the surface of the precision metal parts. When the rotating cylinder 22 is rotated toward the downward feeding port by the classification unloading mechanism 3, the locking member 62 is fixedly connected to the one-way latch 5431, and the master-slave gear drives the driven gear 543 to rotate, and the piston 545 reciprocates, thereby spraying a protective layer on the surface of the precision metal parts to achieve surface protection of the precision metal parts.

[0060] The two sets of position sensors 211, reciprocating pump fluid components 54 and one-way locking components 6 can realize staggered feeding, staggered visual inspection and staggered application of protective layers of two precision metal parts, thereby greatly improving the efficiency of visual inspection and subsequent processing.

[0061] Reference Figure 1 and Figure 2The classification unloading mechanism 3 includes an unloading sorting bin 31, a sorting conveyor belt 32 and a sorting collection channel 33. The unloading sorting bin 31 is used to sort qualified and unqualified precision metal parts in the two receiving slots 221 after visual inspection. The sorting conveyor belt 32 is used to classify and convey qualified and unqualified precision metal parts. The sorting collection channel 33 is used to classify and collect qualified and unqualified precision metal parts conveyed by the sorting conveyor belt 32.

[0062] Reference Figure 1 and Figure 2 The material unloading and sorting bin 31 includes a material unloading bin 311 and a classification bin 312. The material unloading bin 311 is opened at the top, and two classification bins 312 are provided. The two classification bins 312 are hollow and have openings at both ends. One end of the two classification bins 312 is connected to the material unloading bin 311, and the other end corresponds to the sorting conveyor belt 32.

[0063] Reference Figure 1 and Figure 2 A sorting plate and a rotating part for driving the sorting plate to rotate toward the two lower material bins 311 are rotatably installed in the lower material bin 311. The rotating part adopts a motor. When the rotating part rotates, the precision metal parts falling into the lower material bin 311 from the top of the lower material bin 311 can pass through the sorting plate and fall into the corresponding classification bin 312.

[0064] Two sorting conveyor belts 32 are provided corresponding to the two material discharge bins 311 , and the conveying directions of the two sorting conveyor belts 32 are opposite. The sorting and collecting channel 33 includes a material discharge channel 331 and a collecting frame 332 folded and arranged at the bottom of the material discharge channel 331 .

[0065] The unloading and sorting bin 31 can sort the qualified and unqualified precision metal parts in the two receiving slots 221 after visual inspection, the sorting conveyor belt 32 can classify and transport the qualified and unqualified precision metal parts, and the sorting and collecting channel 33 can classify and collect the qualified and unqualified precision metal parts transported by the sorting conveyor belt 32.

[0066] When the receiving groove 221 rotates to face the top of the unloading bin 311, the telescopic part 41 contracts, and the precision metal parts are unloaded into the unloading bin 311. Driven by the rotating part, the sorting plate unloads the precision metal parts into the corresponding classification bin 312, and the sorting conveyor belt 32 sorts and processes qualified and unqualified precision metal parts.

[0067] The precision metal parts coming out of different classification bins 312 will be conveyed to different unloading channels 331 by different sorting conveyor belts 32, and then fall into the corresponding collection frame 332 through the corresponding unloading channel 331, so as to realize the classification and collection of qualified and unqualified precision metal parts.

[0068] The implementation principle of the visual inspection equipment for precision metal parts processing in the embodiment of the present application is as follows: the driving assembly 23 can drive the rotating cylinder 22 to rotate 180 degrees back and forth successively. During the rotation process, the precision metal parts dropped from the lower hopper 11 into the receiving groove 221 can rotate together with the rotating cylinder 22. During this process, the rotating inspection mechanism 2 will visually inspect the surface of the precision metal parts rotated by the rotating clamping mechanism 4; When a defect is detected, the rotating detection mechanism 2 will drive the precision metal parts to be unloaded by the classification unloading mechanism 3. When no defect is detected, the rotating detection mechanism 2 will drive the precision metal parts to rotate in the opposite direction. At this time, the coating mechanism 5 will automatically apply a coating to the outer surface of the precision metal parts. When rotating from the discharge port to the classification discharge mechanism 3 again, the rotating detection mechanism 2 will perform visual inspection on the coating, and the defective and non-defective coatings will be classified and discharged by the classification discharge mechanism 3.

[0069] The entire process can efficiently realize fully automatic inspection of the outer surface of precision metal parts and the joint processing and inspection of subsequent coatings, achieving efficient integrated processing, thereby greatly improving the efficiency of visual inspection and subsequent processing of precision metal parts.

[0070] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. Visual inspection equipment for precision metal parts processing, used to inspect and process hollow cylindrical precision metal parts, characterized by: The processing platform (1) comprises a material discharge hopper (11) for discharging precision metal parts one by one, a rotation detection mechanism (2) for performing rotational visual detection on the precision metal parts after discharging, and a classification discharge mechanism (3) for classifying and discharging qualified and unqualified precision metal parts after detection. The rotation detection mechanism (2) comprises a fixed cylinder (21), a rotating cylinder (22), a driving assembly (23) and a visual detection assembly (24); the fixed cylinder (21) is mounted on the processing table (1); the lower hopper (11) is fixed to the top of the fixed cylinder (21); and the bottom of the lower hopper (11) is provided with a lowering port connected to the inner cavity of the fixed cylinder (21); the rotating cylinder (22) is coaxially rotatably mounted in the fixed cylinder (21); and a receiving groove (221) for partially receiving a precision metal part is provided on the outer peripheral wall; and a rotating clamping mechanism (4) for clamping and rotating the precision metal part falling into the receiving groove (221) is provided on the outer wall of the rotating cylinder (22) corresponding to the receiving groove (221); The driving assembly (23) is used to drive the rotating cylinder (22) to rotate 180 degrees back and forth, so that the receiving groove (221) can be rotated from the material discharge port to the classification material discharge mechanism (3); when the receiving groove (221) rotates from the material discharge port to the classification material discharge mechanism (3), the rotating clamping mechanism (4) is used to drive the precision metal part to rotate one circle; The rotating cylinder (22) is provided with a coating mechanism (5) for coating the outer surface of a qualified precision metal part detected by the visual detection component (24) with a protective layer. The coating mechanism (5) automatically coats the surface of the precision metal part when the rotating cylinder (22) rotates in the reverse direction after being detected by the visual detection component (24).

2. The visual inspection equipment for precision metal parts processing according to claim 1, characterized in that: The visual detection component (24) comprises two groups of image recognition arrays arranged on the inner wall of the fixed cylinder (21), the two groups of image recognition arrays are respectively located near the discharge port and near the classification discharge mechanism (3), and each group of image recognition arrays comprises two rows of arrays composed of a plurality of image recognition sensors, and the two groups of image recognition arrays can respectively perform image recognition on the surface of the rotating precision metal part; A position sensor (211) for detecting the position of a precision metal part after being identified by two groups of the image recognition arrays is arranged in the fixed cylinder (21), and the position sensor (211) is located between the image recognition sensor array close to the classification unloading mechanism (3) and the classification unloading mechanism (3).

3. The visual inspection equipment for precision metal parts processing according to claim 1, characterized in that: The rotating clamping mechanism (4) comprises a telescopic member (41), a rotating member (42) and a clamping plate (43); the telescopic member (41), the rotating member (42) and the clamping plate (43) are symmetrically arranged in two groups corresponding to the two ends of the receiving groove (221); the telescopic member (41) is fixed to the inner wall of the receiving groove (221); the fixed end of the rotating member (42) is fixed to the telescopic end of the telescopic member (41); the clamping plate (43) is fixed to the rotating end of the rotating member (42); and the two clamping plates (43) can clamp and fix the precision metal parts falling into the receiving groove (221).

4. The visual inspection equipment for precision metal parts processing according to claim 2, characterized in that: The coating mechanism (5) comprises a liquid storage cylinder (51), a liquid outlet chamber (52), a positioning cylinder (53) and a reciprocating pump liquid assembly (54); the liquid storage cylinder (51) is fixedly connected to the rotating cylinder (22) and is located inside the rotating cylinder (22); the inner wall of the liquid storage cylinder (51) is hollow and is provided with a liquid coating for coating a qualified precision metal surface; One end of the liquid outlet bin (52) is fixed to the outer bottom wall of the containing groove (221) and communicates with the inner wall; the positioning cylinder (53) is fixedly connected to the rotating cylinder (22) and is located in the liquid storage cylinder (51); the other end of the liquid outlet bin (52) passes through the positioning cylinder (53) and is fixedly connected to the positioning cylinder (53); The liquid storage cylinder (51) and the liquid outlet bin (52) are connected to each other, a first one-way valve is arranged in the liquid storage cylinder (51) to allow the liquid coating to enter the liquid outlet bin (52) in one direction from the liquid storage cylinder (51), and a second one-way valve is arranged in the liquid outlet bin (52) near the outer wall of the containing tank (221) to allow the liquid coating to enter the containing tank (221) in one direction from the liquid outlet bin (52); The liquid outlet bin (52) is disposed through an opening at one end of the positioning cylinder (53), and the reciprocating end portion of the reciprocating pump liquid assembly (54) extends into the liquid outlet bin (52) to automatically pump the liquid coating in the liquid storage cylinder (51) into the containing tank (221); The reciprocating pump assembly (54) is provided with a one-way locking assembly (6) for controlling the start of the reciprocating pump assembly (54); when the driving assembly (23) drives the rotating drum (22) to rotate from the discharge port to the classification discharge mechanism (3), the reciprocating pump assembly (54) stops working; when the driving assembly (23) drives the rotating drum (22) to rotate from the classification discharge mechanism (3) to the discharge port, the one-way locking assembly (6) controls the reciprocating pump assembly (54) to work; A plurality of heating elements (212) for heating and curing the surface of the precision metal part after being coated with the protective layer are arranged between the two groups of image recognition sensors.

5. The visual inspection equipment for precision metal parts processing according to claim 4, characterized in that: The reciprocating pump liquid assembly (54) comprises a rotating shaft (541), a driving gear (542), a driven gear (543), a connecting rod (544) and a piston (545). The rotating shaft (541) is coaxially fixed on the axis of the rotating cylinder (22) and is transmission-connected to the driving assembly (23). The driving gear (542) is coaxially fixed on the rotating shaft (541). The driven gear (543) is rotationally mounted in the rotating cylinder (22) and meshes with the driving gear (542). One end of the connecting rod (544) is eccentrically rotationally connected to the end face of the driving gear (542), and the other end is rotationally connected to the end face of the piston (545). The piston (545) is slidingly sealed and arranged in the liquid outlet bin (52).

6. The visual inspection equipment for precision metal parts processing according to claim 5, characterized in that: The one-way locking assembly (6) comprises a rotating disk (61), a locking member (62) and an elastic member (63); the rotating disk (61) is coaxially connected to the driven gear (543), and the driven gear (543) is rotatably mounted outside the rotating disk (61); the end of the connecting rod (544) is eccentrically rotatably connected to the rotating disk (61); and a one-way locking tooth (5431) is circumferentially arranged on the inner wall of the driven gear (543); The rotating disk (61) has a mounting groove on its wheel surface, one end of the locking member (62) is rotatably mounted on the inner wall of the mounting groove, and the other end is connected to the elastic member (63) and can extend into the one-way locking tooth (5431) of the driven gear (543) under the action of the elastic member (63); When the driving assembly (23) drives the rotating drum (22) to rotate from the discharge port to the classification discharge mechanism (3), the locking member (62) is rotationally connected with the one-way latch tooth (5431); when the driving assembly (23) drives the rotating drum (22) to rotate from the classification discharge mechanism (3) to the discharge port, the locking member (62) is clamped and fixed with the one-way latch tooth (5431).

7. The visual inspection equipment for precision metal parts processing according to claim 6, characterized in that: Two receiving grooves (221) are provided on the outer wall of the rotating cylinder (22); when one of the receiving grooves (221) rotates to a position passing through the image recognition sensor of the classification unloading mechanism (3), the other receiving groove (221) rotates to a position directly facing the unloading port; The position sensor (211), the reciprocating pump fluid assembly (54) and the one-way locking assembly (6) are all arranged correspondingly, and the locking and unlocking states of the two one-way locking assemblies (6) are opposite.

8. The visual inspection equipment for precision metal parts processing according to claim 1, characterized in that: The classification unloading mechanism (3) comprises an unloading sorting bin (31), a sorting conveyor belt (32) and a sorting collection channel (33); the unloading sorting bin (31) is used to sort qualified and unqualified precision metal parts in the two containing slots (221) after visual inspection; the sorting conveyor belt (32) is used to classify and convey qualified and unqualified precision metal parts; and the sorting collection channel (33) is used to classify and collect qualified and unqualified precision metal parts conveyed by the sorting conveyor belt (32).

9. The visual inspection equipment for precision metal parts processing according to claim 8, characterized in that: The material unloading and sorting bin (31) comprises a material unloading bin (311) and a classification bin (312), the material unloading bin (311) is provided with an opening at the top, two classification bins (312) are provided, the two classification bins (312) are hollow and have openings at both ends, one end of the two classification bins (312) is connected to the material unloading bin (311), and the other end corresponds to the sorting conveyor belt (32); A sorting plate and a rotating part for driving the sorting plate to rotate toward the two lower material bins (311) are rotatably installed in the lower material bin (311). When the rotating part rotates, the precision metal parts falling into the lower material bin (311) from the top of the lower material bin (311) can pass through the sorting plate and fall into the corresponding classification bin (312).

10. The visual inspection equipment for precision metal parts processing according to claim 9, characterized in that: The sorting conveyor belts (32) are provided with two corresponding to the two material discharge bins (311), and the conveying directions of the two sorting conveyor belts (32) are opposite. The sorting and collecting channel (33) comprises a material discharge channel (331) and a collecting frame (332) which is folded and arranged at the bottom of the material discharge channel (331).

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